org.w3c.dom
Interface Text

The Text interface inherits from
CharacterData and represents the textual content
(termed character
data in XML) of an Element or Attr.
If there is no markup inside an element's content, the text is
contained in a single object implementing the Text
interface that is the only child of the element. If there is
markup, it is parsed into the information items (elements,
comments, etc.) and Text nodes that form the list of
children of the element.

When a document is first made available via the DOM, there is
only one Text node for each block of text. Users may
create adjacent Text nodes that represent the contents
of a given element without any intervening markup, but should be
aware that there is no way to represent the separations between
these nodes in XML or HTML, so they will not (in general) persist
between DOM editing sessions. The normalize() method
on Node merges any such adjacent Text
objects into a single node for each block of text.

splitText

Breaks this node into two nodes at the specified
offset, keeping both in the tree as siblings. After
being split, this node will contain all the content up to the
offset point. A new node of the same type, which
contains all the content at and after the offset
point, is returned. If the original node had a parent node, the new
node is inserted as the next sibling of the original node. When the
offset is equal to the length of this node, the new
node has no data.

Parameters:

offset - The 16-bit unit offset at which to split,
starting from 0.

Returns:

The new node, of the same type as this node.

Throws:

DOMException -
INDEX_SIZE_ERR: Raised if the specified offset is negative or
greater than the number of 16-bit units in data.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.